This is some proper piece of kit! Big brake kit with the Ultraleggeras look totally badass!
I am running the same H&R springs as you and I also used to previously have the Sportlines on. I switched to the H&R because I wasn't happy with the rear being slightly higher than the front on the Sportlines. Now that I have been running the H&R's for some 2000 miles, they also sit a bit higher at the back. The H&R's also sit slightly higher than the Sportlines at the front, I believe the difference is about 5-10mm on my car.
Just out of curiosity, have you noticed that the H&R would sit higher and could you possibly measure the distance between the center of the wheel and the top of wheel arch? :) Mine used to be 330-335mm front and back with the Sportlines and now it is 5-10mm more with the H&R's.